Gas film face seal structure for cantilever-type foils
A gas film seal and foil technology, which is applied in the direction of engine seal, engine components, mechanical equipment, etc., can solve the problems of restricting the popularization and application of foil end face seals, high processing accuracy requirements, complex processing technology, etc., and achieve great promotion Application Potential, Increased Sensitivity, Effect of Low Machining Accuracy Requirements
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[0019] The technical solution of the present invention will be described in detail below with reference to the drawings.
[0020] Reference Figure 1-4 As shown, a cantilever type foil end face air film sealing structure includes a moving ring and a static ring that are air film sealed; the sealing end face of at least one of the moving ring or the static ring is a cantilever type foil end face. The end surface of the cantilevered foil includes an annular ring body 4, a foil piece 2, and a pin 3. The inner side of the ring body 4 is raised to form a ring step, and the upper surface of the ring step forms a sealing dam 1; several foils The sheet 2 is laid end to end on the annular concave surface of the outer side of the sealing dam 1. The foil sheet 2 is in the shape of a fan evenly distributed along the circumference, and is divided into several small pieces 5 in the radial direction from the free end to the fixed end. The small piece 5 on the inside is wider than the small pie...
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